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Use SystemRandom for token generation

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Richard van der Hoff 2019-05-03 12:38:03 +01:00
parent ac6a0d72b2
commit 247dc1bd0b
2 changed files with 8 additions and 2 deletions
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9
synapse/util/stringutils.py
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@ -24,14 +24,19 @@ _string_with_symbols = (
string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
)
# random_string and random_string_with_symbols are used for a range of things,
# some cryptographically important, some less so. We use SystemRandom to make sure
# we get cryptographically-secure randoms.
rand = random.SystemRandom()
def random_string(length):
return ''.join(random.choice(string.ascii_letters) for _ in range(length))
return ''.join(rand.choice(string.ascii_letters) for _ in range(length))
def random_string_with_symbols(length):
return ''.join(
random.choice(_string_with_symbols) for _ in range(length)
rand.choice(_string_with_symbols) for _ in range(length)
)